If youre anything like me, you get pretty grumpy when youre hungry (a condition also known as hangry). However, according to this study, being hungry also helps you make better decisions. To test this, the researchers forced subjects to fast for a night. When the subjects arrived at the laboratory the next day, the scientists served some of them breakfast, but made the others wait.All of them then took the Iowa Gambling Task, a psychological test based on gambling that is supposed to simulate real-life decision making (you can try it yourself via an iTunes app). The researchers found that the subjects who were hungry actually made more advantageous choices and performed better than those who were sated. Being hungry also helped people resist choices that were disadvantageous in the long run, even if they brought immediate big rewards. There you have it: people make better choices when hungry. So the next time you go to a casino, consider skipping the buffet...